Microstructure, electromagnetic and dielectric properties of zinc substituted lithium ferrites prepared by radiation-thermal heating

Microstructure, electromagnetic and dielectric properties of zinc substituted lithium ferrites prepared by radiation-thermal heating

Bibliographische Detailangaben
Parent link:Ceramics International.— , 1981-
Vol. 41, iss. 10, pt. A.— 2015.— [P. 13671–13675]
1. Verfasser: Malyshev A. V. Andrei Vladimirovich
Körperschaften: Национальный исследовательский Томский политехнический университет (ТПУ) Институт неразрушающего контроля (ИНК) Проблемная научно-исследовательская лаборатория электроники, диэлектриков и полупроводников (ПНИЛ ЭДиП), Национальный исследовательский Томский политехнический университет (ТПУ) Институт неразрушающего контроля (ИНК) Кафедра физических методов и приборов контроля качества (ФМПК)
Weitere Verfasser: Lysenko E. N. Elena Nikolaevna, Vlasov V. A. Vitaliy Anatolievich
Zusammenfassung:Title screen
Polycrystalline zinc substituted lithium ferrites (lithium–zinc ferrites) with the chemical formula Li0.4Fe2.4Zn0.2O4 were prepared by heating themixture using a high-energy beam of electrons accelerated to energy of 2.4 MeV. The sintering temperature and time were 1100 1C and 2 h,respectively. The microstructure of the samples was investigated by XRD and SEM analyses, and the density and porosity were determined byhydrostatic weighing. The magnetic (saturation magnetization, the Curie temperature) and dielectric (electrical conductivity, frequencydependence of the dielectric constant and dielectric loss tangent) properties for lithium–zinc ferrites were studied. The results were comparedwith the results obtained for the samples prepared for the samples in compact pallets form by conventional ceramic technology through heatingthe mixture in a resistance furnace. The XRD analysis confirmed the formation of the spinel structure of the produced ferrite samples. The resultsof the study show that the samples sintered using radiation-thermal heating exhibit a higher density and less porosity. These samples arecharacterized by lower electrical resistivity, higher dielectric losses and high saturation magnetization.
Режим доступа: по договору с организацией-держателем ресурса
Sprache:Englisch
Veröffentlicht: 2015
Schlagworte:
электронный ресурс
труды учёных ТПУ
magnetic properties
dielectric properties
radiation-thermal heating
Online-Zugang:http://dx.doi.org/10.1016/j.ceramint.2015.07.165
Format: Elektronisch Buchkapitel
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=643970

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